How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Monday, 4/9100.0*Chance in playoffs100.0*Average seed
RS 6 OS 17 +18.4
+0.8
SAL 16 OS 8 -13.6
-0.6
SPA 14 BF 5 +6.0
+0.2
JPP 16 BF 13 +5.8
+0.1
RS 14 SAL 25 +2.0
JPP 13 SPA 21 +0.3
+0.1
Tuesday, 4/10100.0*Chance in playoffs100.0*Average seed
RS 11 MEL 20 -0.1
SPA 21 MEL 7 +0.1
QE 3 HA 35 -0.0
HA 14 EG 7 -0.0
Wednesday, 4/11100.0*Chance in playoffs100.0*Average seed
LO 11 OS 4 -25.1
-0.6
LO 24 JPP 4 +0.1
If winner is:HomeTieAway
OS vs HAInOutOut
+0.5-0.5-0.5

What If

Chances based on how well the OS finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs123456789101112Count
121-0-0In10012,531,178
10-11Out10013,186,766*
Total:48.7%495125,717,944

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs